US3428490A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Noble metal aluminum alloys as catalysts for fuel cell electrodes
Assignee: Sunoco Inc
•
Filing: 1962-08-29
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Granted: 1969-02-18
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Expires: 1982-08-29
Abstract
No abstract record available.
Inventors
- 👤 Justo B Bravo
- 👤 Glenn R Dimeler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 12:30
CPC Classifications
H; H01; H01M; H01M4/00; H01M4/86; H01M4/98; Y; Y02; Y02E; Y02E60/00; Y02E60/30; Y02E60/50; Y10; Y10T; Y10T428/00; Y10T428/12; Y10T428/12014; Y10T428/12153
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
100 words
AN ELECTRIC-CURRENT GENERATING FUEL CELL COMPRISING AN OXYGEN-GAS ELECTRODE, A HYDROGEN ELECTRODE AND AN ALKALINE ELECTROLYTE AND AN ELECTROLYTE IKN CONTACT WITH BOTH SAID ELECTRODES, SAID HYDROGEN ELECTRODE HAVING BEEN PREPERED BY COMPOUNDING 88-95% BY WEIGHT OF A DILUENT METAL MATRIX SELECTED FROM THE GROUP CONSISTING OF SILVER, CHROMIUM, TITANIUM, NICKEL AND MIXTURES THEREOF AND 112% BY WEIGHT OF A CATALYTIC NOBLE METAL-ALUMINUM ALLOY RANGING IN CONTENT FROM 20-70% BY WEIGHT OF NOBLE METAL AND 80-30% BY WEIGHT OF ALUMINUM, AND TREATING SAID COMPOSITION WITH AN ALKALI LEACHING SOLUTION UNTIL AT LEAST A MAJOR PORTION OF THE ALUMINUM IS REMOVED.
Claim 2
Dependent Claim
100 words
AN ELECTRIC-CURRENT GENERATING FUEL CELL COMPRISING AN OXYGEN-GAS ELECTRODE, A HYDROGEN ELECTRODE AND AN ALKALINE ELECTROLYTE AND AN ELECTROLYTE IKN CONTACT WITH BOTH SAID ELECTRODES, SAID HYDROGEN ELECTRODE HAVING BEEN PREPERED BY COMPOUNDING 88-95% BY WEIGHT OF A DILUENT METAL MATRIX SELECTED FROM THE GROUP CONSISTING OF SILVER, CHROMIUM, TITANIUM, NICKEL AND MIXTURES THEREOF AND 112% BY WEIGHT OF A CATALYTIC NOBLE METAL-ALUMINUM ALLOY RANGING IN CONTENT FROM 20-70% BY WEIGHT OF NOBLE METAL AND 80-30% BY WEIGHT OF ALUMINUM, AND TREATING SAID COMPOSITION WITH AN ALKALI LEACHING SOLUTION UNTIL AT LEAST A MAJOR PORTION OF THE ALUMINUM IS REMOVED.
References Cited (Backward Citations)
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US1988059A
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US2384501A
Cited
US3035998A
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US3150011A
Cited
US3068157A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-02-18 | 1972-08-19 | 1973-02-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-02-18 | 1976-08-19 | 1977-02-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-02-18 | 1980-08-19 | 1981-02-18 | $7700.00 | Window Closed / Lapsed |